Parents told Action 7 News that they are extremely disturbed after hearing that registered sex offender Robert Locey somehow got on campus at Belen High School, refused to leave and then wound up in a girl's bathroom.

"That's scary, very scary that that is happening here. (It's) such a small town," grandparent Carlita Pena said.

Police said that Locey was spotted on campus just before 7 a.m. while trying to get into the girl's bathroom. According to the police report, Locey was asked several times to leave the campus, but he did not. The superintendent said the he was eventually found hiding in the bathroom.

"It always raises a red flag for us when we see a sex offender trying to get into the girls bathroom," Belen Police Chief Dan Robb said.

Robb said Locey, who was convicted of attempted criminal sexual penetration in 2004, told security that his mom works at the school and he was trying to use the restroom, but he couldn't answer why he wanted to go inside the girl's bathroom.

After authorities realized he was a sex offender, they said Locey admitted that he knew he shouldn't be around children.

The superintendent said the school chose not to send a note home. Instead, a note was sent to all administrators, asking them to keep a close eye out for anything suspicious.